I have hit mine with as much as a table spoon per gallon of jacks 20-10-20 with 1 tea protek, 2 1/2 tea apple cider vinegar (ph 6.2) and a 1/2 tea dyna foliage pro with no burn. The only time i hit them this hard is at the end of veg and first 21 days of flower and they seem to eat it up with...